All-grain · 20 L (5.3 gal)

Märzen Recipe

BJCP 6A · Märzen

The original Oktoberfest beer: golden amber, with lots of toasted bread from Munich malt, a dry finish and gentle bitterness. It's a lager, so it needs cold.

Märzen recipe by the numbers

Batch size
20 L (5.3 gal)
Original gravity
1.055
Final gravity
1.012
ABV
5.7%
Bitterness
22 IBU
Color
9 SRM (17 EBC)
Mash
66 °C (151 °F) for 60 minutes
Boil
60 minutes
Fermentation
12 °C (54 °F) for 2 weeks, 3 days at 18 °C (64 °F) and 6 weeks at 1-2 °C (34-36 °F)
Bottling
6.1 g of sugar per liter (0.8 oz/gal)

About 170 kcal per 330 ml (11 oz) bottle, worked out from its original and final gravity.

Märzen recipe: ingredients and steps

Batch size

Recipe for 20 liters (5.3 US gallons) into the fermenter.

Malts

MaltAmount%
Munich malt15 EBC (6 °L)2.60 kg (5.73 lb)50.5%
Pilsner malt4 EBC (2 °L)1.60 kg (3.53 lb)31.1%
Vienna malt8 EBC (4 °L)0.70 kg (1.54 lb)13.6%
Caramunich malt90 EBC (34 °L)0.25 kg (0.55 lb)4.9%

Hops

HopAmountWhen
Magnum13% alpha acids12 g (0.42 oz)60 minBittering
Hallertau Mittelfrüh4% alpha acids20 g (0.71 oz)20 minFlavor

You will also need

Yeast: Dry lager yeast, such as W-34/70: two 11.5 g (0.4 oz) packets. At 12 °C (54 °F) the yeast works slowly, so you need twice as much.

Water: About 29 L (7.7 gal): 15.5 L (4.1 gal) for the mash and 13.5 L (3.6 gal) for the sparge.

Priming sugar: 6.1 g of white sugar per liter bottled (0.8 oz/gal): about 115 g (4.1 oz) for 19 L (5 gal).

Hops: pellets, kept in the freezer until brew day.

Step by step

  1. Heat 15.5 L (4.1 gal) of water to 72 °C (162 °F), add the crushed malt and stir until there are no lumps. It should settle at about 66 °C (151 °F): hold that temperature for 60 minutes, covered.
  2. Lift out the grain and sparge it with 13.5 L (3.6 gal) of water at 76 °C (169 °F). You should collect about 24 L (6.3 gal) of wort at 1.046.
  3. Bring to a boil and boil for 60 minutes, uncovered. When the boil starts, add the 12 g (0.4 oz) of Magnum; with 20 minutes left, 20 g (0.7 oz) of Hallertau.
  4. Chill as low as you can, down to 12 °C (54 °F) if you can get there; if not, chill to 20 °C (68 °F) and put the fermenter in the fridge until it drops to 12 °C (54 °F) before pitching the yeast. Transfer about 20 L (5.3 gal) to the fermenter, aerate well and take a gravity reading: it should be around 1.055.
  5. Pitch both packets of yeast and ferment at 12 °C (54 °F). When the gravity drops to 1.020-1.022 (about 10 days), move the fermenter to 18 °C (64 °F) and leave it there for 3 days: this is the diacetyl rest, so the yeast can clean up the diacetyl, which tastes like butter.
  6. Once the gravity sits at 1.012 for three days in a row, lower the temperature by 2 °C (about 4 °F) a day down to 1-2 °C (34-36 °F) and leave the beer there for six weeks. That cold storage is the lagering: it clears the beer and rounds out the flavor.
  7. Bottle with the priming sugar dissolved in a little boiled water and leave the bottles for three weeks at room temperature: after so long in the cold, there's little yeast left in suspension and it takes longer to carbonate. Then into the fridge.

Almost all the flavor comes from the Munich malt: don't swap it for more Caramunich, which would make the beer sweet and heavy. A good Märzen is malty but dry.

If your Magnum isn't 13% alpha acids, use 12 × 13 ÷ your percentage, in grams, to keep it at about 22 IBU.

Start it in mid-July and it'll be ready for your own Oktoberfest. The priming sugar is calculated for the 18 °C (64 °F) of the diacetyl rest.

The style: Märzen (BJCP 6A), with its history, its numbers and other ways to brew it.

Different setup? Recalculate with the water calculator, the IBU calculator and the priming sugar calculator.

Rating recipes and keeping a brew log need an account, which is only available in Spanish for now. English accounts are coming soon.

Frequently asked questions

How strong will this Märzen be?

About 5.7% ABV: it starts at 1.055 and finishes at 1.012, and (OG − FG) × 131.25 gives that percentage.

How long until it is ready?

One brew day, fermentation at 12 °C (54 °F) for 2 weeks, 3 days at 18 °C (64 °F) and 6 weeks at 1-2 °C (34-36 °F) and about two weeks in the bottle: give it a little over a month.

Can I use a different bittering hop?

Yes. What matters is keeping the bitterness: if you use another hop instead of Magnum at 13% alpha acids, work out the grams from its alpha acids (or with the IBU calculator) to stay at about 22 IBUs.

What if my system does not get 72% efficiency?

Your gravity will come out different. Scale the base malt up or down (or add a little dry malt extract to the boil if you fall short) and recalculate the water with the calculator.

More recipes

Reference style: Märzen in the BJCP guidelines, 2021 edition. Original recipe by Hacer Cerveza Casera, designed for a homebrew setup.